@article{AdesinaBlockGuenteretal.2023, author = {Adesina, Morenike O. and Block, Inga and G{\"u}nter, Christina and Unuabonah, Emmanuel Iyayi and Taubert, Andreas}, title = {Efficient Removal of Tetracycline and Bisphenol A from Water with a New Hybrid Clay/TiO2 Composite}, series = {ACS Omega}, volume = {8}, journal = {ACS Omega}, number = {24}, publisher = {American Chemical Society}, address = {Washington}, issn = {2470-1343}, doi = {10.1021/acsomega.3c00184}, pages = {21594 -- 21604}, year = {2023}, abstract = {New TiO2 hybrid composites were prepared fromkaolinclay, predried and carbonized biomass, and titanium tetraisopropoxideand explored for tetracycline (TET) and bisphenol A (BPA) removalfrom water. Overall, the removal rate is 84\% for TET and 51\% for BPA.The maximum adsorption capacities (q (m))are 30 and 23 mg/g for TET and BPA, respectively. These capacitiesare far greater than those obtained for unmodified TiO2. Increasing the ionic strength of the solution does not change theadsorption capacity of the adsorbent. pH changes only slightly changeBPA adsorption, while a pH > 7 significantly reduces the adsorptionof TET on the material. The Brouers-Sotolongo fractal modelbest describes the kinetic data for both TET and BPA adsorption, predictingthat the adsorption process occurs via a complex mechanism involvingvarious forces of attraction. Temkin and Freundlich isotherms, whichbest fit the equilibrium adsorption data for TET and BPA, respectively,suggest that adsorption sites are heterogeneous in nature. Overall,the composite materials are much more effective for TET removal fromaqueous solution than for BPA. This phenomenon is assigned to a differencein the TET/adsorbent interactions vs the BPA/adsorbent interactions:the decisive factor appears to be favorable electrostatic interactionsfor TET yielding a more effective TET removal.}, language = {en} } @phdthesis{Agarwal2023, author = {Agarwal, Pallavi}, title = {Functional characterization of ROS-responsive genes, ANAC085 and ATR7, in Arabidopsis thaliana}, school = {Universit{\"a}t Potsdam}, pages = {XVII, 169}, year = {2023}, language = {en} } @article{AgarwalHamidizadehBier2023, author = {Agarwal, Saloni and Hamidizadeh, Mojdeh and Bier, Frank Fabian}, title = {Detection of reverse transcriptase LAMP-amplified nucleic acid from oropharyngeal viral swab samples using biotinylated DNA probes through a lateral flow assay}, series = {Biosensors : open access journal}, volume = {13}, journal = {Biosensors : open access journal}, number = {11}, publisher = {MDPI}, address = {Basel}, issn = {2079-6374}, doi = {10.3390/bios13110988}, pages = {15}, year = {2023}, abstract = {This study focuses on three key aspects: (a) crude throat swab samples in a viral transport medium (VTM) as templates for RT-LAMP reactions; (b) a biotinylated DNA probe with enhanced specificity for LFA readouts; and (c) a digital semi-quantification of LFA readouts. Throat swab samples from SARS-CoV-2 positive and negative patients were used in their crude (no cleaning or pre-treatment) forms for the RT-LAMP reaction. The samples were heat-inactivated but not treated for any kind of nucleic acid extraction or purification. The RT-LAMP (20 min processing time) product was read out by an LFA approach using two labels: FITC and biotin. FITC was enzymatically incorporated into the RT-LAMP amplicon with the LF-LAMP primer, and biotin was introduced using biotinylated DNA probes, specifically for the amplicon region after RT-LAMP amplification. This assay setup with biotinylated DNA probe-based LFA readouts of the RT-LAMP amplicon was 98.11\% sensitive and 96.15\% specific. The LFA result was further analysed by a smartphone-based IVD device, wherein the T-line intensity was recorded. The LFA T-line intensity was then correlated with the qRT-PCR Ct value of the positive swab samples. A digital semi-quantification of RT-LAMP-LFA was reported with a correlation coefficient of R2 = 0.702. The overall RT-LAMP-LFA assay time was recorded to be 35 min with a LoD of three RNA copies/µL (Ct-33). With these three advancements, the nucleic acid testing-point of care technique (NAT-POCT) is exemplified as a versatile biosensor platform with great potential and applicability for the detection of pathogens without the need for sample storage, transportation, or pre-processing.}, language = {en} } @article{AgtheKayserSchwarzetal.2023, author = {Agthe, Maria and Kayser, Daniela Niesta and Schwarz, Sascha and Maner, Jon K.}, title = {Antecedents of the red-romance effect}, series = {PLOS ONE / Public Library of Science}, volume = {18}, journal = {PLOS ONE / Public Library of Science}, number = {4}, publisher = {PLOS}, address = {San Fransisco}, issn = {1932-6203}, doi = {10.1371/journal.pone.0284035}, pages = {19}, year = {2023}, abstract = {The color red has been implicated in a variety of social processes, including those involving mating. While previous research suggests that women sometimes wear red strategically to increase their attractiveness, the replicability of this literature has been questioned. The current research is a reasonably powered conceptual replication designed to strengthen this literature by testing whether women are more inclined to display the color red 1) during fertile (as compared with less fertile) days of the menstrual cycle, and 2) when expecting to interact with an attractive man (as compared with a less attractive man and with a control condition). Analyses controlled for a number of theoretically relevant covariates (relationship status, age, the current weather). Only the latter hypothesis received mixed support (mainly among women on hormonal birth control), whereas results concerning the former hypothesis did not reach significance. Women (N = 281) displayed more red when expecting to interact with an attractive man; findings did not support the prediction that women would increase their display of red on fertile days of the cycle. Findings thus suggested only mixed replicability for the link between the color red and psychological processes involving romantic attraction. They also illustrate the importance of further investigating the boundary conditions of color effects on everyday social processes.}, language = {en} } @article{AkampuriraAkalaDereseetal.2023, author = {Akampurira, Denis and Akala, Hoseah M. and Derese, Solomon and Heydenreich, Matthias and Yenesew, Abiy}, title = {A new C-C linked benzophenathridine-2-quinoline dimer, and the antiplasmodial activity of alkaloids from Zanthoxylum holstzianum}, series = {Natural product research}, volume = {37}, journal = {Natural product research}, number = {13}, publisher = {Taylor \& Francis}, address = {London [u.a.]}, issn = {1478-6419}, doi = {10.1080/14786419.2022.2034810}, pages = {2161 -- 2171}, year = {2023}, abstract = {The CH2Cl2/MeOH (1:1) extract of Zanthoxylum holstzianum stem bark showed good antiplasmodial activity (IC50 2.5 +/- 0.3 and 2.6 +/- 0.3 mu g/mL against the W2 and D6 strains of Plasmodium falciparum, respectively). From the extract five benzophenanthridine alkaloids [8-acetonyldihydrochelerythrine (1), nitidine (2), dihydrochelerythine (3), norchelerythrine (5), arnottianamide (8)]; a 2-quinolone alkaloid [N-methylflindersine (4)]; a lignan [4,4 '-dihydroxy-3,3 '-dimethoxylignan-9,9 '-diyl diacetate (7)] and a dimer of a benzophenanthridine and 2-quinoline [holstzianoquinoline (6)] were isolated. The CH2Cl2/MeOH (1:1) extract of the root bark afforded 1, 3-6, 8, chelerythridimerine (9) and 9-demethyloxychelerythrine (10). Holstzianoquinoline (6) is new, and is the second dimer linked by a C-C bond of a benzophenanthridine and a 2-quinoline reported thus far. The compounds were identified based on spectroscopic evidence. Amongst five compounds (1-5) tested against two strains of P. falciparum, nitidine (IC50 0.11 +/- 0.01 mu g/mL against W2 and D6 strains) and norchelerythrine (IC50 value of 0.15 +/- 0.01 mu g/mL against D6 strain) were the most active.}, language = {en} } @phdthesis{Akbal2023, author = {Akbal, Zeynep}, title = {Lived-Body Experiences in Virtual Reality}, series = {Digitale Gesellschaft}, volume = {61}, journal = {Digitale Gesellschaft}, publisher = {transcript}, address = {Bielefeld}, isbn = {978-3-8376-6676-2}, school = {Universit{\"a}t Potsdam}, pages = {210}, year = {2023}, language = {en} } @incollection{Albrecht2023, author = {Albrecht, Anna Helena}, title = {Compensation for wrongful convictions in Germany}, series = {Compensation for wrongful convictions: A comparative perspective}, booktitle = {Compensation for wrongful convictions: A comparative perspective}, editor = {Jasiński, Wojciech and Kremens, Karolina}, edition = {1st ed.}, publisher = {Routledge}, address = {London}, doi = {10.4324/9781003229414-3}, pages = {25 -- 51}, year = {2023}, abstract = {The chapter describes the German procedure for obtaining compensation for wrongful convictions. Besides specific cases of compensation for convictions based on subsequently repealed legislation and claims arising from general official liability, German law provides a mechanism for compensation, insofar as a conviction is eliminated or mitigated in a retrial in criminal proceedings. Still within this retrial, the criminal court is called upon to determine whether a claim exists for compensation of material and/or non-material damages on the merits. The amount of compensation is assessed in a judicial administrative procedure at the request of the person concerned. The compensation for non-material harm is calculated on the basis of a lump sum of currently €75 per day of imprisonment; the extent of material harm must be submitted and proven by the person concerned. She has the right to take legal action in the civil courts against the decision on the amount, she has the right to take legal action in the civil courts.}, language = {en} } @phdthesis{Amen2023, author = {Amen, Rahma}, title = {Adaptive radiation in African weakly electric fish genus Campylomormyrus}, school = {Universit{\"a}t Potsdam}, pages = {XIV, 155}, year = {2023}, abstract = {The African weakly electric fish genus Campylomormyrus includes 15 described species mostly native to the Congo River and its tributaries. They are considered sympatric species, because their distribution area overlaps. These species generate species-specific electric organ discharges (EODs) varying in waveform characteristics, including duration, polarity, and phase number. They exhibit also pronounced divergence in their snout, i.e. the length, thickness, and curvature. The diversifications in these two phenotypical traits (EOD and snout) have been proposed as key factors promoting adaptive radiation in Campylomormyrus. The role of EODs as a pre-zygotic isolation mechanism driving sympatric speciation by promoting assortative mating has been examined using behavioral, genetical, and histological approaches. However, the evolutionary effects of the snout morphology and its link to species divergence have not been closely examined. Hence, the main objective of this study is to investigate the effect of snout morphology diversification and its correlated EOD to better understand their sympatric speciation and evolutionary drivers. Moreover, I aim to utilize the intragenus and intergenus hybrids of Campylomormyrus to better understand trait divergence as well as underlying molecular/genetic mechanisms involved in the radiation scenario. To this end, I utilized three different approaches: feeding behavior analysis, diet assessment, and geometric morphometrics analysis. I performed feeding behavior experiments to evaluate the concept of the phenotype-environment correlation by testing whether Campylomormyrus species show substrate preferences. The behavioral experiments showed that the short snout species exhibits preference to sandy substrate, the long snout species prefers a stone substrate, and the species with intermediate snout size does not exhibit any substrate preference. The experiments suggest that the diverse feeding apparatus in the genus Campylomormyrus may have evolved in adaptation to their microhabitats. I also performed diet assessments of sympatric Campylomormyrus species and a sister genus species (Gnathonemus petersii) with markedly different snout morphologies and EOD using NGS-based DNA metabarcoding of their stomach contents. The diet of each species was documented showing that aquatic insects such as dipterans, coleopterans and trichopterans represent the major diet component. The results showed also that all species are able to exploit diverse food niches in their habitats. However, comparing the diet overlap indices showed that different snout morphologies and the associated divergence in the EOD translated into different prey spectra. These results further support the idea that the EOD could be a 'magic trait' triggering both adaptation and reproductive isolation. Geometric morphometrics method was also used to compare the phenotypical shape traits of the F1 intragenus (Campylomormyrus) and intergenus (Campylomormyrus species and Gnathonemus petersii) hybrids relative to their parents. The hybrids of these species were well separated based on the morphological traits, however the hybrid phenotypic traits were closer to the short-snouted species. In addition, the likelihood that the short snout expressed in the hybrids increases with increasing the genetic distance of the parental species. The results confirmed that additive effects produce intermediate phenotypes in F1-hybrids. It seems, therefore, that morphological shape traits in hybrids, unlike the physiological traits, were not expressed straightforward.}, language = {en} } @article{Andres2023, author = {Andres, Maximilian}, title = {Four essays on communication, cooperation, and text mining in experimental economics}, pages = {248}, year = {2023}, language = {en} } @techreport{AngenendtKochTjaden2023, type = {Working Paper}, author = {Angenendt, Steffen and Koch, Anne and Tjaden, Jasper}, title = {Predicting irregular migration}, series = {high hopes, meagre results}, volume = {11}, journal = {high hopes, meagre results}, publisher = {Stiftung Wissenschaft und Politik (SWP)}, address = {Berlin}, issn = {2747-5115}, doi = {10.18449/2023RP11}, pages = {36}, year = {2023}, abstract = {German and European migration policy operates in permanent crisis mode. Sudden increases in irregular immigration create a sense of loss of control, which is instrumentalised by populist forces. This has generated great interest in quantitative migration predictions. High expectations are placed in the AI-based tools currently under devel\&\#x00ad;op\&\#x00ad;ment for forecasting irregular migration. The potential applications of these tools are manifold. They range from managing and strengthening the EU's reception capacity and border protections to configuring humanitarian aid provision and longer-term planning of development programmes. There is a significant gap between the expectations placed in the new instruments and their practical utility. Technical limits exist, medium-term forecasts are methodologically implausible, and channels for feeding the results into political decision-making processes are lacking. The great demand for predictions is driven by the political functions of migration prediction, which include its uses in political communication, funding acquisition and legitimisation of political decisions. Investment in the quality of the underlying data will be more productive than developing a succession of new prediction tools. Funding for applications in emergency relief and development cooperation should be prioritised. Crisis early warning and risk analysis should also be strengthened and their networking improved.}, language = {en} } @article{ApeltKochMichalowskietal.2023, author = {Apelt, Maja and Koch, Annika and Michalowski, Ines and Molzberger, Kaspar and Schenk, Liane and Schmidt, Max Oliver}, title = {How organisations regulate Muslim body practices}, series = {Comparative migration studies}, volume = {11}, journal = {Comparative migration studies}, publisher = {European Research Centre on Migration and Ethnic Relations}, address = {Utrecht}, issn = {2214-594X}, doi = {10.1186/s40878-023-00355-y}, pages = {19}, year = {2023}, abstract = {In a comparison of three human service organisations in which the human body plays a key role, we examine how organisations regulate religious body practices. We concentrate on Muslim norms of dressing and undressing as a potential focal point of cultural and religious diversity. Inspired by Ray's (2019) idea of racialized organizations, we assume that state-run organizations in Germany are characterized by a strong commitment to religious tolerance and non-discrimination but also marked by anti- Muslim sentiment prevalent among the German population. Our study looks for mechanism that explain how Human Service Organizations accommodate Muslim body practices. It draws on qualitative empirical data collected in state-run hospitals, schools and swimming pools in Germany. Our analyses show that the organizations draw on formal and informal rules at the organizational level to accommodate Islam. We identify five general organizational mechanisms that may hinder Muslim accommodation in human service organizations. In particular, we see a risk of decoupling between the expectation of religious tolerance and processes that lead to informal discrimination, driven mainly by the difficulty of controlling group dynamics among users.}, language = {en} } @article{ApergiZimmermannWekoetal.2023, author = {Apergi, Maria and Zimmermann, Eva and Weko, Silvia and Lilliestam, Johan}, title = {Is renewable energy technology trade more or less conflictive than other trade?}, series = {Energy policy}, volume = {177}, journal = {Energy policy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0301-4215}, doi = {10.1016/j.enpol.2023.113538}, year = {2023}, abstract = {Renewable energy changes the geopolitics of energy: whereas access to fossil fuel resources were key in the past, control over technology and industry will be key in the future. Consequently, different scholars have predicted that a growing focus on renewables will increase or decrease conflict in the energy sector, with no consensus on which is most likely. Here, we investigate the degree of conflict in renewable energy technology (RET) trade by analyzing data on 7041 trade conflicts 1995-2020, guided by two sets of theory-driven hypotheses. We show that RET trade is associated with more, longer, and more intense trade conflicts than other trade conflicts for 1995-2016. This supports the neorealist, geo-economic view of countries being willing to risk conflict to increase their share of a market rather than avoiding conflicts to increase the overall market size. It also contradicts the view that renewables will reduce conflict: at least in the past and regarding trade, it has increased rather than decreased conflict. For 2017-2020, this trend is reversed and RET trade became significantly less conflictive than other trade. Our findings imply that improved conflict-resolution institutions for RET are needed. We also suggest establishing specific institutions to govern trade in immature technologies.}, language = {en} } @phdthesis{Apriyanto2023, author = {Apriyanto, Ardha}, title = {Analysis of starch metabolism in source and sink tissue of plants}, school = {Universit{\"a}t Potsdam}, pages = {166}, year = {2023}, abstract = {Starch is an essential biopolymer produced by plants. Starch can be made inside source tissue (such as leaves) and sink tissue (such as fruits and tubers). Nevertheless, understanding how starch metabolism is regulated in source and sink tissues is fundamental for improving crop production. Despite recent advances in the understanding of starch and its metabolism, there is still a knowledge gap in the source and sink metabolism. Therefore, this study aimed to summarize the state of the art regarding starch structure and metabolism inside plants. In addition, this study aimed to elucidate the regulation of starch metabolism in the source tissue using the leaves of a model organism, Arabidopsis thaliana, and the sink tissue of oil palm (Elaeis guineensis) fruit as a commercial crop. The research regarding the source tissue will focus on the effect of the blockage of starch degradation on the starch parameter in leaves, especially in those of A. thaliana, which lack both disproportionating enzyme 2 (DPE2) and plastidial glucan phosphorylase 1 (PHS1) (dpe2/phs1). The additional elimination of phosphoglucan water dikinase (PWD), starch excess 4 (SEX4), isoamylase 3 (ISA3), and disproportionating enzyme 1 (DPE1) in the dpe2/phs1 mutant background demonstrates the alteration of starch granule number per chloroplast. This study provides insights into the control mechanism of granule number regulation in the chloroplast. The research regarding the sink tissue will emphasize the relationship between starch metabolism and the lipid metabolism pathway in oil palm fruits. This study was conducted to observe the alteration of starch parameters, metabolite abundance, and gene expression during oil palm fruit development with different oil yields. This study shows that starch and sucrose can be used as biomarkers for oil yield in oil palms. In addition, it is revealed that the enzyme isoforms related to starch metabolism influence the oil production in oil palm fruit. Overall, this thesis presents novel information regarding starch metabolism in the source tissue of A.thaliana and the sink tissue of E.guineensis. The results shown in this thesis can be applied to many applications, such as modifying the starch parameter in other plants for specific needs.}, language = {en} } @article{ApriyantoCompartFettke2023, author = {Apriyanto, Ardha and Compart, Julia and Fettke, J{\"o}rg}, title = {Transcriptomic analysis of mesocarp tissue during fruit development of the oil palm revealed specific isozymes related to starch metabolism that control oil yield}, series = {Frontiers in plant science}, volume = {14}, journal = {Frontiers in plant science}, publisher = {Frontiers Media}, address = {Lausanne}, issn = {1664-462X}, doi = {10.3389/fpls.2023.1220237}, pages = {13}, year = {2023}, abstract = {The oil palm (Elaeis guineensis Jacq.) produces a large amount of oil from the fruit. However, increasing the oil production in this fruit is still challenging. A recent study has shown that starch metabolism is essential for oil synthesis in fruit-producing species. Therefore, the transcriptomic analysis by RNA-seq was performed to observe gene expression alteration related to starch metabolism genes throughout the maturity stages of oil palm fruit with different oil yields. Gene expression profiles were examined with three different oil yields group (low, medium, and high) at six fruit development phases (4, 8, 12, 16, 20, and 22 weeks after pollination). We successfully identified and analyzed differentially expressed genes in oil palm mesocarps during development. The results showed that the transcriptome profile for each developmental phase was unique. Sucrose flux to the mesocarp tissue, rapid starch turnover, and high glycolytic activity have been identified as critical factors for oil production in oil palms. For starch metabolism and the glycolytic pathway, we identified specific gene expressions of enzyme isoforms (isozymes) that correlated with oil production, which may determine the oil content. This study provides valuable information for creating new high-oil-yielding palm varieties via breeding programs or genome editing approaches.}, language = {en} } @article{ArendZimmerXuetal.2023, author = {Arend, Marius and Zimmer, David and Xu, Rudan and Sommer, Frederik and M{\"u}hlhaus, Timo and Nikoloski, Zoran}, title = {Proteomics and constraint-based modelling reveal enzyme kinetic properties of Chlamydomonas reinhardtii on a genome scale}, series = {Nature Communications}, volume = {14}, journal = {Nature Communications}, number = {1}, publisher = {Springer Nature}, address = {London}, issn = {2041-1723}, doi = {10.1038/s41467-023-40498-1}, pages = {9}, year = {2023}, abstract = {Metabolic engineering of microalgae offers a promising solution for sustainable biofuel production, and rational design of engineering strategies can be improved by employing metabolic models that integrate enzyme turnover numbers. However, the coverage of turnover numbers for Chlamydomonas reinhardtii, a model eukaryotic microalga accessible to metabolic engineering, is 17-fold smaller compared to the heterotrophic cell factory Saccharomyces cerevisiae. Here we generate quantitative protein abundance data of Chlamydomonas covering 2337 to 3708 proteins in various growth conditions to estimate in vivo maximum apparent turnover numbers. Using constrained-based modeling we provide proxies for in vivo turnover numbers of 568 reactions, representing a 10-fold increase over the in vitro data for Chlamydomonas. Integration of the in vivo estimates instead of in vitro values in a metabolic model of Chlamydomonas improved the accuracy of enzyme usage predictions. Our results help in extending the knowledge on uncharacterized enzymes and improve biotechnological applications of Chlamydomonas.}, language = {en} } @article{ArguellodeSouzaSamprognaMohorGuzmanAriasetal.2023, author = {Arguello de Souza, Felipe Augusto and Samprogna Mohor, Guilherme and Guzman Arias, Diego Alejandro and Sarmento Buarque, Ana Carolina and Taffarello, Denise and Mendiondo, Eduardo Mario}, title = {Droughts in S{\~a}o Paulo}, series = {Urban water journal}, volume = {20}, journal = {Urban water journal}, number = {10}, publisher = {Taylor \& Francis}, address = {London [u.a.]}, issn = {1573-062X}, doi = {10.1080/1573062X.2022.2047735}, pages = {1682 -- 1694}, year = {2023}, abstract = {Literature has suggested that droughts and societies are mutually shaped and, therefore, both require a better understanding of their coevolution on risk reduction and water adaptation. Although the Sao Paulo Metropolitan Region drew attention because of the 2013-2015 drought, this was not the first event. This paper revisits this event and the 1985-1986 drought to compare the evolution of drought risk management aspects. Documents and hydrological records are analyzed to evaluate the hazard intensity, preparedness, exposure, vulnerability, responses, and mitigation aspects of both events. Although the hazard intensity and exposure of the latter event were larger than the former one, the policy implementation delay and the dependency of service areas in a single reservoir exposed the region to higher vulnerability. In addition to the structural and non-structural tools implemented just after the events, this work raises the possibility of rainwater reuse for reducing the stress in reservoirs.}, language = {en} } @phdthesis{Artins2023, author = {Artins, Anthony}, title = {Crosstalk between Target Of Rapamycin (TOR) and sugar signaling in Arabidopsis thaliana}, school = {Universit{\"a}t Potsdam}, pages = {125}, year = {2023}, language = {en} } @article{AsselmannHolstSpecht2023, author = {Asselmann, Eva and Holst, Elke and Specht, Jule}, title = {Longitudinal bidirectional associations between personality and becoming a leader}, series = {Journal of personality}, volume = {91}, journal = {Journal of personality}, number = {2}, publisher = {Wiley-Blackwell}, address = {Boston, Mass. [u.a.]}, issn = {0022-3506}, doi = {10.1111/jopy.12719}, pages = {285 -- 298}, year = {2023}, abstract = {Objective Leaders differ in their personalities from non-leaders. However, when do these differences emerge? Are leaders "born to be leaders" or does their personality change in preparation for a leadership role and due to increasing leadership experience? Method Using data from the German Socio-Economic Panel Study, we examined personality differences between leaders (N = 2683 leaders, women: n = 967; 36.04\%) and non-leaders (N = 33,663) as well as personality changes before and after becoming a leader. Results Already in the years before starting a leadership position, leaders-to-be were more extraverted, open, emotionally stable, conscientious, and willing to take risks, felt to have greater control, and trusted others more than non-leaders. Moreover, personality changed in emergent leaders: While approaching a leadership position, leaders-to-be (especially men) became gradually more extraverted, open, and willing to take risks and felt to have more control over their life. After becoming a leader, they became less extraverted, less willing to take risks, and less conscientious but gained self-esteem. Conclusions Our findings suggest that people are not simply "born to be leaders" but that their personalities change considerably in preparation for a leadership role and due to leadership experience. Some changes are transient, but others last for a long time.}, language = {en} } @article{Assen2023, author = {Assen, Louisa}, title = {Digitalization as a Provider of Sustainability?}, series = {Sustainability}, volume = {15}, journal = {Sustainability}, number = {5}, publisher = {MDPI}, address = {Basel}, issn = {2071-1050}, doi = {10.3390/su15054621}, pages = {20}, year = {2023}, abstract = {Digitalization, as well as sustainability, are gaining increased relevance and have attracted significant attention in research and practice. However, the research already published about this topic examining digitalization in the retail sector does not consider the acceptance of related innovations, nor their impact on sustainability. Therefore, this article critically analyzes the acceptance of customers towards digital technologies in fashion stores as well as their impact on sustainability in the textile industry. The comprehensive analysis of the literature and the current state of research provide the basis of this paper. Theoretical models, such as the Technology-Acceptance-Model (TAM) and the Unified Theory of Acceptance and Use of Technology 2 (UTAUT 2) enable the evaluation of expectations and acceptance, as well as the assessment of possible inhibitory factors for the subsequent descriptive and statistical examination of the acceptance of digital technologies in fashion stores. The research on this subject was examined in a quantitative way. The key findings show that customers do accept digital technologies in fashion stores. The final part of this contribution describes the innovative Digitalization 4 Sustainability Framework which shows that digital technologies at the point of sale (PoS) in fashion stores could have a positive impact on sustainability. Overall, this paper shows that it is particularly important for fashion stores to concentrate on their individual strengths and customer needs as well as to indicate a more sustainable way by using digital technologies, in order to achieve added value for the customers and to set themselves apart from the competition while designing a more sustainable future. Moreover, fashion stores should make it a point of their honor to harness the power of digitalization for sake of sustainability and economic value creation.}, language = {en} } @misc{Avalli2023, author = {Avalli, Andrea}, title = {Review of Dario Barbera: Processo al Classico. L'epurazione dell'archeologia fascista}, series = {thersites 16}, volume = {2023}, journal = {thersites 16}, number = {16}, editor = {Amb{\"u}hl, Annemarie and Carl{\`a}-Uhink, Filippo and Rollinger, Christian and Walde, Christine}, issn = {2364-7612}, doi = {10.34679/thersites.vol16.233}, pages = {168 -- 172}, year = {2023}, language = {en} } @article{BalderjahnAppenfeller2023, author = {Balderjahn, Ingo and Appenfeller, Dennis}, title = {A social marketing approach to voluntary simplicity}, series = {Sustainability}, volume = {15}, journal = {Sustainability}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {2071-1050}, doi = {10.3390/su15032302}, pages = {17}, year = {2023}, abstract = {Higher eco-efficiency will not be enough to slow global warming caused by climate change. To keep global warming to 2 degrees, people also need to reduce their consumption. At present, however, many who would be able to do so seem unwilling to comply. Given the threats of a runaway climate change, urgent measures are needed to promote less personal consumption. This study, therefore, examines whether social marketing consume-less appeals can be used to encourage consumers to voluntarily abstain from consumption. As part of an online experiment with nearly 2000 randomly sampled users of an online platform for sustainable consumption, we tested the effectiveness of five different "consume-less" appeals based on traditional advertising formats (including emotional, informational, and social claims). The study shows that consume-less appeals are capable of limiting personal desire to buy. However, significant differences in the effectiveness of the appeal formats used in this study were observed. In addition, we found evidence of rebound effects, which leads us to critically evaluate the overall potential of social marketing to promote more resource-conserving lifestyles. While commercial consumer-free appeals have previously been studied (e.g., Patagonia's "Don't Buy This Jacked"), this study on the effectiveness of non-commercial consume-free appeals is novel and provides new insights.}, language = {en} } @article{BalderjahnHoffmann2023, author = {Balderjahn, Ingo and Hoffmann, Stefan}, title = {The Effectiveness of consume-less appeals in social marketing}, series = {Journal of macromarketing}, journal = {Journal of macromarketing}, publisher = {Sage}, address = {Thousand Oaks, Calif.}, issn = {0276-1467}, doi = {10.1177/02761467231205448}, year = {2023}, abstract = {Consume-less appeals in social marketing can help reduce the lavish consumption in wealthy countries, which poses a major threat to the climate. This study experimentally examines the effectiveness of three different types of consume-less appeals (informative, social normative, and emotional appeals) on participants' actual spending levels during a real shopping trip compared to a control group (no appeal). In addition, the study tests whether these appeals evoke negative rebounds (in terms of post-purchase climate donation) or positive rebounds (in terms of accepting post-purchase material giveaways). A field experiment in a grocery store in Germany with 170 participants shows that social normative and the emotional appeals reduce actual shopping spending. Informative and social normative appeals increase donations, and emotional appeals reduce the items of taken giveaways. The findings further support certain indirect impacts of the consume-less appeals on rebounds in terms of spending levels.}, language = {en} } @article{BalderjahnHoffmannHuettel2023, author = {Balderjahn, Ingo and Hoffmann, Stefan and H{\"u}ttel, Alexandra}, title = {How empowerment and materialism contribute to anti-consumers' well-being}, series = {European journal of marketing}, volume = {57}, journal = {European journal of marketing}, number = {4}, publisher = {Emerald}, address = {Bradford}, issn = {0309-0566}, doi = {10.1108/EJM-04-2020-0284}, pages = {1186 -- 1218}, year = {2023}, abstract = {Purpose Because steadily growing consumption is not beneficial for nature and climate and is not the same as increasing well-being, an anti-consumerism movement has formed worldwide. The renouncement of dispensable consumption will, however, only establish itself as a significant lifestyle if consumers do not perceive reduced consumption as a personal sacrifice. Since prior research has not yielded a consistent understanding of the relationship between anti-consumption and personal well-being, this paper aims to examine three factors about which theory implies that they may moderate this relationship: decision-control empowerment, market-control empowerment and the value of materialism. Design/methodology/approach The analysis is based on data from a large-scale, representative online survey (N = 1,398). Structural equation modelling with latent interaction effects is used to test how three moderators (decision-control empowerment, market-control empowerment and materialism) affect the relationship amongst four types of anti-consumption (e.g. voluntary simplicity) and three different well-being states (e.g. subjective well-being). Findings While both dimensions of empowerment almost always directly promote consumer well-being, significant moderation effects are present in only a few but meaningful cases. Although the materialism value tends to reduce consumers' well-being, it improves the well-being effect of two anti-consumption styles. Research limitations/implications Using only one sample from a wealthy country is a limitation of the study. Researchers should replicate the findings in different nations and cultures. Practical implications Consumer affairs practitioners and commercial marketing for sustainably produced, high-quality and long-lasting goods can benefit greatly from these findings. Social implications This paper shows that sustainable marketing campaigns can more easily motivate consumers to voluntarily reduce their consumption for the benefit of society and the environment if a high level of market-control empowerment can be communicated to them. Originality/value This study provides differentiated new insights into the roles of consumer empowerment, i.e. both decision-control empowerment and market-control empowerment, and the value of materialism to frame specific relationships between different anti-consumption types and various well-being states.}, language = {en} } @article{BarschkettHuebenerLeibingetal.2023, author = {Barschkett, Mara and Huebener, Mathias and Leibing, Andreas and Marcus, Jan and Margaryan, Shushanik}, title = {The long-term effects of measles vaccination on earnings and employment}, series = {Journal of comments and replications in economics}, volume = {2}, journal = {Journal of comments and replications in economics}, number = {4}, publisher = {ZBW - Leibniz Information Centre for Economics}, address = {Hamburg}, issn = {2749-988X}, doi = {10.18718/81781.30}, pages = {15}, year = {2023}, abstract = {Atwood analyzes the effects of the 1963 U.S. measles vaccination on long-run labor market outcomes, using a generalized difference-in-differences approach. We reproduce the results of this paper and perform a battery of robustness checks. Overall, we confirm that the measles vaccination had positive labor market effects. While the negative effect on the likelihood of living in poverty and the positive effect on the probability of being employed are very robust across the different specifications, the headline estimate—the effect on earnings—is more sensitive to the exclusion of certain regions and survey years.}, language = {en} } @techreport{BarschkettHuebenerLeibingetal.2023, type = {Working Paper}, author = {Barschkett, Mara and Huebener, Mathias and Leibing, Andreas and Marcus, Jan and Margaryan, Shushanik}, title = {Replication of Atwood's (2022) the long-term effects of measles vaccination on earnings and employment}, series = {I4R discussion paper series}, journal = {I4R discussion paper series}, number = {33}, publisher = {Institute for Replication}, address = {Essen}, issn = {2752-1931}, pages = {22}, year = {2023}, abstract = {Atwood (2022) analyzes the effects of the 1963 U.S. measles vaccination on longrun labor market outcomes, using a generalized difference-in-differences approach. We reproduce the results of this paper and perform a battery of robustness checks. Overall, we confirm that the measles vaccination had positive labor market effects. While the negative effect on the likelihood of living in poverty and the positive effect on the probability of being employed are very robust across the different specifications, the headline estimate-the effect on earnings-is more sensitive to the exclusion of certain regions and survey years.}, language = {en} } @phdthesis{Baryzewska2023, author = {Baryzewska, Agata W.}, title = {Reconfigurable Janus emulsions as signal transducers for biosensing applications}, school = {Universit{\"a}t Potsdam}, pages = {133}, year = {2023}, language = {en} } @phdthesis{Bastian2023, author = {Bastian, Martin}, title = {An emergent machine learning approach for seasonal cyclone activity forecasts}, school = {Universit{\"a}t Potsdam}, pages = {135}, year = {2023}, abstract = {Seasonal forecasts are of great interest in many areas. Knowing the amount of precipitation for the upcoming season in regions of water scarcity would facilitate a better water management. If farmers knew the weather conditions of the upcoming summer at sowing time, they could select those cereal species that are best adapted to these conditions. This would allow farmers to improve the harvest and potentially even reduce the amount of pesticides used. However, the undoubted advantages of seasonal forecasts are often opposed by their high degree of uncertainty. The great challenge of generating seasonal forecasts with lead times of several months mainly originates from the chaotic nature of the earth system. In a chaotic system, even tiny differences in the initial conditions can lead to strong deviations in the system's state in the long run. In this dissertation we propose an emergent machine learning approach for seasonal forecasting, called the AnlgModel. The AnlgModel combines the analogue method with myopic feature selection and bootstrapping. To benchmark the abilities of the AnlgModel we apply it to seasonal cyclone activity forecasts in the North Atlantic and Northwest Pacific. The AnlgModel demonstrates competitive hindcast skills with two operational forecasts and even outperforms these for long lead times. In the second chapter we comprehend the forecasting strategy of the Anlg-Model. We thereby analyse the analogue selection process for the 2017 North Atlantic and the 2018 Northwest Pacific seasonal cyclone activity. The analysis shows that those climate indices which are known to influence the seasonal cyclone activity, such as the Ni{\~n}o 3.4 SST, are correctly represented among the selected analogues. Furthermore the selected analogues reflect large-scale climate patterns that were identified by expert reports as being determinative for these particular seasons. In the third chapter we analyse the features that are used by the AnlgModel for its predictions. We therefore inspect the feature relevance (FR). The FR patterns learned by the AnlgModel show a high congruence with the predictor regions used by the operational forecasts. However, the AnlgModel also discovered new features, such as the SST anomaly in the Gulf of Guinea during November. This SST pattern exhibits a remarkably high predictive potential for the upcoming Atlantic hurricane activity. In the final chapter we investigate potential mechanisms, that link two of these regions with high feature relevance to the Atlantic hurricane activity. We mainly focus on ocean surface transport. The ocean surface flow paths are calculated using Lagrangian particle analysis. We demonstrate that the FR patterns in the region of the Canary islands do not correspond with ocean surface transport. It is instead likely that these FR patterns fingerprint a wind transport of latent heat. The second region to be studied is situated in the Gulf of Guinea. Our analysis shows that the FR patterns seen there do fingerprint ocean surface transport. However, our simulations also show that at least one other mechanism is involved in linking the Gulf of Guinea SST anomaly in November to the hurricane activity of the upcoming season. In this work the AnlgModel does not only demonstrate its outstanding forecast skills but also shows its capabilities as research tool for detecting oceanic and atmospheric mechanisms.}, language = {en} } @phdthesis{BastosLima2023, author = {Bastos Lima, Rita}, title = {Seed coat-derived brassnosteroids non-cell autonomously regulate endosperm development}, school = {Universit{\"a}t Potsdam}, pages = {157}, year = {2023}, language = {en} } @phdthesis{Batti2023, author = {Batti, Anil Dominic}, title = {Schopenhauer's doctrine of salvation in relation to his critique of religion and philosophical teachings}, publisher = {Logos}, address = {Berlin}, isbn = {978-3-83255-735-5}, school = {Universit{\"a}t Potsdam}, pages = {319}, year = {2023}, abstract = {Arthur Schopenhauer (1788-1860) was perhaps the last polymath among the great Germanic philosophers. Switching with ease and elegance between epistemic positions and fields as diverse as idealism and empiricism, fideism and rationalism, realism and nominalism, art and religion, jurisprudence and politics, psychology and occultism, Schopenhauer erected an imposing edifice bearing testimony to his universal learning. This study is an investigation into the very conclusion of Schopenhauer's philosophy and endeavours to answer the following question: did Schopenhauer's doctrine of salvation issue forth organically from his intellectual output or was it annexed to his philosophy as a result of his critical engagement with religion? The labyrinthine paths through which Schopenhauer arrives at the soteriological culmination of his philosophy are subjected to critical assessment; the picture that emerges is of a philosopher who seemed convinced that he had solved some of the most pressing cosmic riddles to have tormented mankind through the ages.}, language = {en} } @phdthesis{Baum2023, author = {Baum, Katharina}, title = {Social networking sites}, school = {Universit{\"a}t Potsdam}, pages = {281}, year = {2023}, language = {en} } @article{BaumAbramovaMeissneretal.2023, author = {Baum, Katharina and Abramova, Olga and Meißner, Stefan and Krasnova, Hanna}, title = {The effects of targeted political advertising on user privacy concerns and digital product acceptance}, series = {Electronic markets}, volume = {33}, journal = {Electronic markets}, number = {46}, publisher = {Springer}, address = {Heidelberg}, issn = {1019-6781}, doi = {10.1007/s12525-023-00656-1}, pages = {17}, year = {2023}, abstract = {Online businesses are increasingly relying on targeted advertisements as a revenue stream, which might lead to privacy concerns and hinder product adoption. Therefore, it is crucial for online companies to understand which types of targeted advertisements consumers will accept. In recent years, users have been increasingly targeted by political advertisements, which has caused adverse reactions in media and society. Nonetheless, few studies experimentally investigate user privacy concerns and their role in acceptance decisions in response to targeted political advertisements. To fill this gap, we explore the magnitude of privacy concerns towards targeted political ads compared to "traditional" targeting in the product context. Surprisingly, we find no notable differences in privacy concerns between these data use purposes. In the next step, user preferences over ad types are elicited with the help of a discrete choice experiment in the mobile app adoption context. Our findings suggest that while targeted political advertising is somewhat less desirable than targeted product advertising, the odds of choosing an app are statistically insignificant between two data use purposes. Together, these results contribute to a better understanding of users' privacy concerns and preferences in the context of targeted political advertising online.}, language = {en} } @article{BaumgartBoosBraunsmann2023, author = {Baumgart, Lene and Boos, Pauline and Braunsmann, Katharina}, title = {A circulatory loop}, series = {Social inclusion}, volume = {11}, journal = {Social inclusion}, number = {4}, publisher = {Cogitatio Press}, address = {Lisbon}, issn = {2183-2803}, doi = {10.17645/si.v11i4.7056}, pages = {160 -- 171}, year = {2023}, abstract = {In the digitalization debate, gender biases in digital technologies play a significant role because of their potential for social exclusion and inequality. It is therefore remarkable that organizations as drivers of digitalization and as places for social integration have been widely overlooked so far. Simultaneously, gender biases and digitalization have structurally immanent connections to organizations. Therefore, a look at the reciprocal relationship between organizations, digitalization, and gender is needed. The article provides answers to the question of whether and how organizations (re)produce, reinforce, or diminish gender-specific inequalities during their digital transformations. On the one hand, gender inequalities emerge when organizations use post-bureaucratic concepts through digitalization. On the other hand, gender inequalities are reproduced when organizations either program or implement digital technologies and fail to establish control structures that prevent gender biases. This article shows that digitalization can act as a catalyst for inequality-producing mechanisms, but also has the potential to mitigate inequalities. We argue that organizations must be considered when discussing the potential of exclusion through digitalization.}, language = {en} } @article{BaumgartBoosEckstein2023, author = {Baumgart, Lene and Boos, Pauline and Eckstein, Bernd}, title = {Datafication and algorithmic contingency}, series = {Work organisation, labour \& globalisation}, volume = {17}, journal = {Work organisation, labour \& globalisation}, number = {1}, publisher = {Pluto Journals}, address = {London}, issn = {1745-641X}, doi = {10.13169/workorgalaboglob.17.1.0061}, pages = {61 -- 73}, year = {2023}, abstract = {In the context of persistent images of self-perpetuated technologies, we discuss the interplay of digital technologies and organisational dynamics against the backdrop of systems theory. Building on the case of an international corporation that, during an agile reorganisation, introduced an AI-based personnel management platform, we show how technical systems produce a form of algorithmic contingency that subsequently leads to the emergence of formal and informal interaction systems. Using the concept of datafication, we explain how these interactions are barriers to the self-perpetuation of data-based decision-making, making it possible to take into consideration further decision factors and complementing the output of the platform. The research was carried out within the scope of the research project 'Organisational Implications of Digitalisation: The Development of (Post-)Bureaucratic Organisational Structures in the Context of Digital Transformation' funded by the German Research Foundation (DFG).}, language = {en} } @inproceedings{BenderGronauWinter2023, author = {Bender, Benedict and Gronau, Norbert and Winter, Robert}, title = {Minitrack introduction enterprise-level information systems}, series = {Proceedings of the 56th Hawaii International Conference on System Sciences}, booktitle = {Proceedings of the 56th Hawaii International Conference on System Sciences}, editor = {Bui, Tung X.}, publisher = {Hawaii International Conference on System Sciences}, address = {Honolulu, HI}, isbn = {978-0-9981331-6-4}, issn = {2572-6862}, pages = {5809 -- 5810}, year = {2023}, abstract = {While Information Systems (IS) Research on the individual and workgroup level of analysis is omnipresent, research on the enterprise-level IS is less frequent. Even though research on Enterprise Systems and their management is established in academic associations and conference programs, enterprise-level phenomena are underrepresented. This minitrack provides a forum to integrate existing research streams that traditionally needed to be attached to other topics (such as IS management or IS governance). The minitrack received broad attention. The three selected papers address different facets of the future role of enterprise-wide IS including aspects such as carbonization, ecosystem integration, and technology-organization fit.}, language = {en} } @article{BereswillGatzMillerSuetal.2023, author = {Bereswill, Sarah and Gatz-Miller, Hannah and Su, Danyang and T{\"o}tzke, Christian and Kardjilov, Nikolay and Oswald, Sascha and Mayer, Klaus Ulrich}, title = {Coupling non-invasive imaging and reactive transport modeling to investigate water and oxygen dynamics in the root zone}, series = {Vadose zone journal}, volume = {22}, journal = {Vadose zone journal}, number = {5}, publisher = {Wiley}, address = {Hoboken}, issn = {1539-1663}, doi = {10.1002/vzj2.20268}, pages = {19}, year = {2023}, abstract = {Oxygen (O-2) availability in soils is vital for plant growth and productivity. The transport and consumption of O-2 in the root zone is closely linked to soil moisture content, the spatial distribution of roots, as well as structure and heterogeneity of the surrounding soil. In this study, we measure three-dimensional root system architecture and the spatiotemporal dynamics of soil moisture (\& theta;) and O-2 concentrations in the root zone of maize (Zea mays) via non-invasive imaging, and then construct and parameterize a reactive transport model based on the experimental data. The combination of three non-invasive imaging methods allowed for a direct comparison of simulation results with observations at high spatial and temporal resolution. In three different modeling scenarios, we investigated how the results obtained for different levels of conceptual complexity in the model were able to match measured \& theta; and O-2 concentration patterns. We found that the modeling scenario that considers heterogeneous soil structure and spatial variability of hydraulic parameters (permeability, porosity, and van Genuchten \& alpha; and n), better reproduced the measured \& theta; and O-2 patterns relative to a simple model with a homogenous soil domain. The results from our combined imaging and modeling analysis reveal that experimental O-2 and water dynamics can be reproduced quantitatively in a reactive transport model, and that O-2 and water dynamics are best characterized when conditions unique to the specific system beyond the distribution of roots, such as soil structure and its effect on water saturation and macroscopic gas transport pathways, are considered.}, language = {en} } @article{BerryDammhahnBlaum2023, author = {Berry, Paul E. and Dammhahn, Melanie and Blaum, Niels}, title = {Keeping cool on hot days}, series = {Frontiers in ecology and evolution}, volume = {11}, journal = {Frontiers in ecology and evolution}, publisher = {Frontiers Media}, address = {Lausanne}, issn = {2296-701X}, doi = {10.3389/fevo.2023.1172303}, pages = {13}, year = {2023}, abstract = {Long-lived organisms are likely to respond to a rapidly changing climate with behavioral flexibility. Animals inhabiting the arid parts of southern Africa face a particularly rapid rise in temperature which in combination with food and water scarcity places substantial constraints on the ability of animals to tolerate heat. We investigated how three species of African antelope-springbok Antidorcas marsupialis, kudu Tragelaphus strepsiceros and eland T. oryx-differing in body size, habitat preference and movement ecology, change their activity in response to extreme heat in an arid savanna. Serving as a proxy for activity, dynamic body acceleration data recorded every five minutes were analyzed for seven to eight individuals per species for the three hottest months of the year. Activity responses to heat during the hottest time of day (the afternoons) were investigated and diel activity patterns were compared between hot and cool days. Springbok, which prefer open habitat, are highly mobile and the smallest of the species studied, showed the greatest decrease in activity with rising temperature. Furthermore, springbok showed reduced mean activity over the 24 h cycle on hot days compared to cool days. Large-bodied eland seemed less affected by afternoon heat than springbok. While eland also reduced diurnal activity on hot days compared to cool days, they compensated for this by increasing nocturnal activity, possibly because their predation risk is lower. Kudu, which are comparatively sedentary and typically occupy shady habitat, seemed least affected during the hottest time of day and showed no appreciable difference in diel activity patterns between hot and cool days. The interplay between habitat preference, body size, movement patterns, and other factors seems complex and even sub-lethal levels of heat stress have been shown to impact an animal's long-term survival and reproduction. Thus, differing heat tolerances among species could result in a shift in the composition of African herbivore communities as temperatures continue to rise, with significant implications for economically important wildlife-based land use and conservation.}, language = {en} } @article{BersalliTroendleLilliestam2023, author = {Bersalli, Germ{\´a}n and Tr{\"o}ndle, Tim and Lilliestam, Johan}, title = {Most industrialised countries have peaked carbon dioxide emissions during economic crises through strengthened structural change}, series = {Communications earth \& environment}, volume = {4}, journal = {Communications earth \& environment}, number = {1}, publisher = {Springer Nature}, address = {London}, issn = {2662-4435}, doi = {10.1038/s43247-023-00687-8}, pages = {44 -- 44}, year = {2023}, abstract = {As the climate targets tighten and countries are impacted by several crises, understanding how and under which conditions carbon dioxide emissions peak and start declining is gaining importance. We assess the timing of emissions peaks in all major emitters (1965-2019) and the extent to which past economic crises have impacted structural drivers of emissions contributing to emission peaks. We show that in 26 of 28 countries that have peaked emissions, the peak occurred just before or during a recession through the combined effect of lower economic growth (1.5 median percentage points per year) and decreasing energy and/or carbon intensity (0.7) during and after the crisis. In peak-and-decline countries, crises have typically magnified pre-existing improvements in structural change. In non-peaking countries, economic growth was less affected, and structural change effects were weaker or increased emissions. Crises do not automatically trigger peaks but may strengthen ongoing decarbonisation trends through several mechanisms.}, language = {en} } @article{BertschekBlockKritikosetal.2023, author = {Bertschek, Irene and Block, Joern and Kritikos, Alexander and Stiel, Caroline}, title = {German financial state aid during Covid-19 pandemic}, series = {Entrepreneurship \& regional development}, volume = {36}, journal = {Entrepreneurship \& regional development}, number = {1-2}, publisher = {Taylor \& Francis}, address = {London}, issn = {0898-5626}, doi = {10.1080/08985626.2023.2196267}, pages = {76 -- 97}, year = {2023}, abstract = {In response to strong revenue and income losses facing a large share of self-employed individuals during the COVID-19 pandemic, the German federal government introduced a €50bn emergency-aid program. Based on real-time online-survey data comprising more than 20,000 observations, we analyze the impact of this program on the confidence to survive the crisis. We investigate how the digitalization level of self-employed individuals influences the program's effectiveness. Employing propensity score matching, we find that the emergency-aid program had only moderately positive effects on the confidence of self-employed to survive the crisis. However, self-employed whose businesses were highly digitalized, benefitted much more from the state aid than those whose businesses were less digitalized. This only holds true for those self-employed, who started the digitalization processes already before the crisis. Taking a regional perspective, we find suggestive evidence that the quality of the regional broadband infrastructure matters in the sense that it increases the effectiveness of the emergency-aid program. Our findings show the interplay between governmental support programs, the digitalization levels of entrepreneurs, and the regional digital infrastructure. The study helps public policy to improve the impact of crisis-related policy instruments, ultimately increasing the resilience of small firms in times of crises.}, language = {en} } @article{BhattacharyyaBalischewskiSperlichetal.2023, author = {Bhattacharyya, Biswajit and Balischewski, Christian and Sperlich, Eric and G{\"u}nter, Christina and Mies, Stefan and Kelling, Alexandra and Taubert, Andreas}, title = {N-Butyl Pyridinium Diiodido Argentate(I)}, series = {Advanced materials interfaces}, volume = {10}, journal = {Advanced materials interfaces}, number = {12}, publisher = {Wiley}, address = {Hoboken}, issn = {2196-7350}, doi = {10.1002/admi.202202363}, pages = {7}, year = {2023}, abstract = {A new solid-state material, N-butyl pyridinium diiodido argentate(I), is synthesized using a simple and effective one-pot approach. In the solid state, the compound exhibits 1D ([AgI2](-))(n) chains that are stabilized by the N-butyl pyridinium cation. The 1D structure is further manifested by the formation of long, needle-like crystals, as revealed from electron microscopy. As the general composition is derived from metal halide-based ionic liquids, the compound has a low melting point of 100-101 degrees C, as confirmed by differential scanning calorimetry. Most importantly, the compound has a conductivity of 10(-6) S cm(-1) at room temperature. At higher temperatures the conductivity increases and reaches to 10(-4 )S cm(-1) at 70 degrees C. In contrast to AgI, however, the current material has a highly anisotropic 1D arrangement of the ionic domains. This provides direct and tuneable access to fast and anisotropic ionic conduction. The material is thus a significant step forward beyond current ion conductors and a highly promising prototype for the rational design of highly conductive ionic solid-state conductors for battery or solar cell applications.}, language = {en} } @article{BittmannDechSchaefer2023, author = {Bittmann, Frank and Dech, Silas and Schaefer, Laura}, title = {Another way to confuse motor control}, series = {Brain Sciences}, volume = {13}, journal = {Brain Sciences}, number = {7}, publisher = {MDPI}, address = {Basel}, issn = {2076-3425}, doi = {10.3390/brainsci13071105}, pages = {20}, year = {2023}, abstract = {Sensorimotor control can be impaired by slacked muscle spindles. This was shown for reflex responses and, recently, also for muscular stability in the sense of Adaptive Force (AF). The slack in muscle spindles was generated by contracting the lengthened muscle followed by passive shortening. AF was suggested to specifically reflect sensorimotor control since it requires tension-length control in adaptation to an increasing load. This study investigated AF parameters in reaction to another, manually performed slack procedure in a preselected sample (n = 13). The AF of 11 elbow and 12 hip flexors was assessed by an objectified manual muscle test (MMT) using a handheld device. Maximal isometric AF was significantly reduced after manual spindle technique vs. regular MMT. Muscle lengthening started at 64.93 \& PLUSMN; 12.46\% of maximal voluntary isometric contraction (MVIC). During regular MMT, muscle length could be maintained stable until 92.53 \& PLUSMN; 10.12\% of MVIC. Hence, muscular stability measured by AF was impaired after spindle manipulation. Force oscillations arose at a significantly lower level for regular vs. spindle. This supports the assumption that they are a prerequisite for stable adaptation. Reduced muscular stability in reaction to slack procedures is considered physiological since sensory information is misled. It is proposed to use slack procedures to test the functionality of the neuromuscular system, which is relevant for clinical practice.}, language = {en} } @article{BittmannDechSchaefer2023, author = {Bittmann, Frank and Dech, Silas and Schaefer, Laura}, title = {How to confuse motor control}, series = {Life : open access journal}, volume = {13}, journal = {Life : open access journal}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {2075-1729}, doi = {10.3390/life13040911}, pages = {18}, year = {2023}, abstract = {Adaptation to external forces relies on a well-functioning proprioceptive system including muscle spindle afferents. Muscle length and tension control in reaction to external forces is most important regarding the Adaptive Force (AF). This study investigated the effect of different procedures, which are assumed to influence the function of muscle spindles, on the AF. Elbow flexors of 12 healthy participants (n = 19 limbs) were assessed by an objectified manual muscle test (MMT) with different procedures: regular MMT, MMT after precontraction (self-estimated 20\% MVIC) in lengthened position with passive return to test position (CL), and MMT after CL with a second precontraction in test position (CL-CT). During regular MMTs, muscles maintained their length up to 99.7\% +/- 1.0\% of the maximal AF (AF(max)). After CL, muscles started to lengthen at 53.0\% +/- 22.5\% of AF(max). For CL-CT, muscles were again able to maintain the static position up to 98.3\% +/- 5.5\% of AF(max). AFiso(max) differed highly significantly between CL vs. CL-CT and regular MMT. CL was assumed to generate a slack of muscle spindles, which led to a substantial reduction of the holding capacity. This was immediately erased by a precontraction in the test position. The results substantiate that muscle spindle sensitivity seems to play an important role for neuromuscular functioning and musculoskeletal stability.}, language = {en} } @article{BlaserWeymarWendt2023, author = {Blaser, Berenike Lisa and Weymar, Mathias and Wendt, Julia}, title = {The effect of a single-session heart rate variability biofeedback on attentional control}, series = {Frontiers in psychology}, volume = {14}, journal = {Frontiers in psychology}, publisher = {Frontiers Research Foundation}, address = {Lausanne}, issn = {1664-1078}, doi = {10.3389/fpsyg.2023.1292983}, pages = {13}, year = {2023}, abstract = {Introduction Vagally mediated heart rate variability is an index of autonomic nervous system activity that is associated with a large variety of outcome variables including psychopathology and self-regulation. While practicing heart rate variability biofeedback over several weeks has been reliably associated with a number of positive outcomes, its acute effects are not well known. As the strongest association with vagally mediated heart rate variability has been found particularly within the attention-related subdomain of self-regulation, we investigated the acute effect of heart rate variability biofeedback on attentional control using the revised Attention Network Test. Methods Fifty-six participants were tested in two sessions. In one session each participant received a heart rate variability biofeedback intervention, and in the other session a control intervention of paced breathing at a normal ventilation rate. After the biofeedback or control intervention, participants completed the Attention Network Test using the Orienting Score as a measure of attentional control. Results Mixed models revealed that higher resting baseline vagally mediated heart rate variability was associated with better performance in attentional control, which suggests more efficient direction of attention to target stimuli. There was no significant main effect of the intervention on attentional control. However, an interaction effect indicated better performance in attentional control after biofeedback in individuals who reported higher current stress levels. Discussion The results point to acute beneficial effects of heart rate variability biofeedback on cognitive performance in highly stressed individuals. Although promising, the results need to be replicated in larger or more targeted samples in order to reach stronger conclusions about the effects.}, language = {en} } @article{Bobzien2023, author = {Bobzien, Licia}, title = {Income inequality and political trust}, series = {Social indicators research}, volume = {169}, journal = {Social indicators research}, number = {1-2}, publisher = {Springer Nature B.V.}, address = {Dordrecht}, issn = {0303-8300}, doi = {10.1007/s11205-023-03168-9}, pages = {505 -- 528}, year = {2023}, abstract = {Political trust—in terms of trust in political institutions—is an important precondition for the functioning and stability of democracy. One widely studied determinant of political trust is income inequality. While the empirical finding that societies with lower levels of income inequality have higher levels of trust is well established, the exact ways in which income inequality affects political trust remain unclear. Past research has shown that individuals oftentimes have biased perceptions of inequality. Considering potentially biased inequality perceptions, I argue that individuals compare their perceptions of inequality to their preference for inequality. If they identify a gap between what they perceive and what they prefer (= fairness gap), they consider their attitudes towards inequality unrepresented. This, in turn, reduces trust in political institutions. Using three waves of the ESS and the ISSP in a cross-country perspective, I find that (1) perceiving a larger fairness gap is associated with lower levels of political trust; (2) the fairness gap mediates the link between actual inequality and political trust; and (3) disaggregating the fairness gap measure, political trust is more strongly linked to variation in inequality perceptions than to variation in inequality preferences. This indicates that inequality perceptions are an important factor shaping trust into political institutions.}, language = {en} } @incollection{Borck2023, author = {Borck, Rainald}, title = {Energy policies, agglomeration, and pollution}, series = {Handbook of labor, human resources and population economics}, booktitle = {Handbook of labor, human resources and population economics}, editor = {Zimmermann, Klaus F.}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-319-57365-6}, doi = {10.1007/978-3-319-57365-6_421-1}, pages = {15}, year = {2023}, abstract = {This chapter reviews the interplay of agglomeration and pollution as well as the effect of energy policies on pollution in an urban context. It starts by describing the effect of agglomeration on pollution. While this effect is theoretically ambiguous, empirical research tends to find that larger cities are more polluted, but per capita emissions fall with city size. The chapter discusses the implications for optimal city size. Conversely, urban pollution tends to discourage agglomeration if larger cities are more exposed to pollution. The chapter then considers various energy policies and their effect on urban pollution. Specifically, it looks at the effects of energy and transport policies as well as urban policies such as zoning.}, language = {en} } @book{Borysek2023, author = {Bor{\´y}sek, Martin}, title = {Jewish Communal Autonomy and Institutional Memory in Venetian Crete}, series = {Studies in Jewish History and Culture}, volume = {75}, journal = {Studies in Jewish History and Culture}, publisher = {Brill}, address = {Leiden}, isbn = {978-90-04-54742-1}, issn = {1568-5004}, doi = {10.1163/9789004547421}, pages = {227}, year = {2023}, abstract = {In the first book-length study of Takkanot Kandiyah, Martin Bor{\´y}sek analyses this fascinating corpus of Hebrew texts written between 1228 -1583 by the leaders of the Jewish community in Candia, the capital of Venetian Crete. Collected in the 16th century by the Cretan Jewish historian Elijah Capsali, the communal byelaws offer a unique perspective on the history of a vibrant, culturally diverse Jewish community during three centuries of Venetian rule. As well as confronting practical problems such as deciding whether Christian wine can be made kosher by adding honey, or stopping irresponsible Jewish youths disturbing religious services by setting off fireworks in the synagogue, Takkanot Kandiyah presents valuable material for the study of communal autonomy and institutional memory in pre-modern Jewish society.}, language = {en} } @article{BoschWilbert2023, author = {Bosch, Jannis and Wilbert, J{\"u}rgen}, title = {The impact of social comparison processes on self-evaluation of performance, self-concept, and task interest}, series = {Frontiers in education}, volume = {8}, journal = {Frontiers in education}, publisher = {Frontiers Media}, address = {Lausanne}, issn = {2504-284X}, doi = {10.3389/feduc.2023.1033488}, pages = {11}, year = {2023}, abstract = {Development of self-concept and task interest has been shown to be affected by social comparison processes in a variety of cross-sectional studies. A potential explanation for these effects is an effect of social comparative performance feedback on an individual's self-evaluation of performance, which in turn influences development of self-concept and task interest. There are, however, only few studies addressing this topic with experimental designs. This study was aimed at closing this research gap by experimentally manipulating social comparative performance. Feedback given was based on 2 × 2 experimental conditions: social position (high vs. low) and average performance of the reference group (high vs. low). Results show a strong effect of social position on self-evaluation of performance and smaller effects on self-concept and task interest.}, language = {en} } @article{BoschDeCesareDemskeetal.2023, author = {Bosch, Sina and De Cesare, Ilaria and Demske, Ulrike and Felser, Claudia}, title = {Correction zu: Word-order variation and coherence in German infinitival complementation. - (The journal of comparative Germanic linguistics. - 26 (2023) 1) . - https://doi.org/10.1007/s10828-023-09140-8}, series = {The journal of comparative Germanic linguistics}, volume = {26}, journal = {The journal of comparative Germanic linguistics}, number = {1}, publisher = {Springer}, address = {New York}, issn = {1383-4924}, doi = {10.1007/s10828-023-09143-5}, pages = {2}, year = {2023}, language = {en} } @article{BoschDeCesareDemskeetal.2023, author = {Bosch, Sina and De Cesare, Ilaria and Demske, Ulrike and Felser, Claudia}, title = {Word-order variation and coherence in German infinitival complementation}, series = {The journal of comparative Germanic linguistics}, volume = {26}, journal = {The journal of comparative Germanic linguistics}, number = {1}, publisher = {Springer}, address = {New York}, issn = {1572-8552}, doi = {10.1007/s10828-023-09140-8}, pages = {43}, year = {2023}, abstract = {This study provides a synthesis of corpus-based and experimental investigations of word-order preferences in German infinitival complementation. We carried out a systematic analysis of present-day German corpora to establish frequency distributions of different word-order options: extraposition, intraposition, and 'third construction'. We then examined, firstly, whether and to what extent corpus frequencies and processing economy constraints can predict the acceptability of these three word-order variants, and whether subject raising and subject control verbs form clearly distinguishable subclasses of infinitive-embedding verbs in terms of their word-order behaviour. Secondly, our study looks into the issue of coherence by comparing acceptability ratings for monoclausal coherent and biclausal incoherent construals of intraposed infinitives, and by examining whether a biclausal incoherent analysis gives rise to local and/or global processing difficulty. Taken together, our results revealed that (i) whilst the extraposition pattern consistently wins out over all other word-order variants for control verbs, neither frequency nor processing-based approaches to word-order variation can account for the acceptability of low-frequency variants, (ii) there is considerable verb-specific variation regarding word-order preferences both between and within the two sets of raising and control verbs under investigation, and (iii) although monoclausal coherent intraposition is rated above biclausal incoherent intraposition, the latter is not any more difficult to process than the former. Our findings indicate that frequency of occurrence and processing-related constraints interact with idiosyncratic lexical properties of individual verbs in determining German speakers' structural preferences.}, language = {en} } @phdthesis{Bouakline2023, author = {Bouakline, Foudhil}, title = {Manifestations of Quantum-Mechanical Effects in Molecular Reaction Dynamics}, school = {Universit{\"a}t Potsdam}, pages = {316}, year = {2023}, abstract = {This habilitation thesis summarises the research work performed by the author during the last quindecennial period. The dissertation reflects his main research interests, which revolve around quantum dynamics of small-sized molecular systems, including their interactions with electromagnetic radiation or dissipative environments. This covers various dynamical processes that involve bound-bound, bound-free, and free-free molecular transitions. The latter encompass light-triggered rovibrational or rovibronic dynamics in bound molecules, molecular photodissociation induced by weak or strong laser fields, state-to-state reactive and/or inelastic molecular collisions, and phonon-driven vibrational relaxation of adsorbates at solid surfaces. Although the dissertation covers different topics of molecular reaction dynamics, most of these studies focus on nuclear quantum effects and their manifestations in experimental measures. The latter are assessed through comparison between quantum and classical predictions, and/or direct confrontation of theory and experiment. Most well known quantum concepts and effects will be encountered in this work. Yet, almost all these quantum notions find their roots in the central pillar of quantum theory, namely, the quantum superposition principle. Indeed, quantum coherence is the main source of most quantum effects, including interference, entanglement, and even tunneling. Thus, the common and predominant theme of all the investigations of this thesis is quantum coherence, and the survival or quenching of subsequent interference effects in various molecular processes. The lion's share of the dissertation is devoted to two associated quantum concepts, which are usually overlooked in computational molecular dynamics, viz. the Berry phase and identical nuclei symmetry. The importance of the latter in dynamical molecular processes and their direct fingerprints in experimental observables also rely very much on quantum coherence and entanglement. All these quantum phenomena are thoroughly discussed within the four main topics that form the core of this thesis. Each topic is described in a separate chapter, where it is briefly summarised and then illustrated with three peer-reviewed publications. The first topic deals with the relevance of quantum coherence/interference in molecular collisions, with a focus on the hydrogen-exchange reaction, H+H2 --> H2+H, and its isotopologues. For these collision processes, the significance of interference of probability amplitudes arises because of the existence of two main scattering pathways. The latter could be inelastic and reactive scattering, direct and time-delayed scattering, or two encircling reaction paths that loop in opposite senses around a conical intersection (CI) of the H3 molecular system. Our joint theoretical-experimental investigations of these processes reveal strong interference and geometric phase (GP) effects in state-to-state reaction probabilities and differential cross sections. However, these coherent effects completely cancel in integral cross sections and reaction rate constants, due to efficient dephasing of interference between the different scattering amplitudes. As byproducts of these studies, we highlight the discovery of two novel scattering mechanisms, which contradict conventional textbook pictures of molecular reaction dynamics. The second topic concerns the effect of the Berry phase on molecular photodynamics at conical intersections. To understand this effect, we developed a topological approach that separates the total molecular wavefunction of an unbound molecular system into two components, which wind in opposite senses around the conical intersection. This separation reveals that the only effect of the geometric phase is to change the sign of the relative phase of these two components. This in turn leads to a shift in the interference pattern of the molecular system---a phase shift that is reminiscient of the celebrated Aharonov-Bohm effect. This procedure is numerically illustrated with photodynamics at model standard CIs, as well as strong-field dissociation of diatomics at light-induced conical intersections (LICIs). Besides the fundamental aspect of these studies, their findings allow to interpret and predict the effect of the GP on the state-resolved or angle-resolved spectra of pump-probe experimental schemes, particularly the distributions of photofragments in molecular photodissociation experiments. The third topic pertains to the role of the indistinguishability of identical nuclei in molecular reaction dynamics, with an emphasis on dynamical localization in highly symmetric molecules. The main object of these studies is whether nuclear-spin statistics allow dynamical localization of the electronic, vibrational, or even rotational density on a specific molecular substructure or configuration rather than on another one which is identical (indistinguishable). Group-theoretic analysis of the symmetrized molecular wavefunctions of these systems shows that nuclear permutation symmetry engenders quantum entanglement between the eigenstates of the different molecular degrees of freedom. This subsequently leads to complete quenching of dynamical localization over indistinguishable molecular substructures---an observation that is in sharp contradiction with well known textbook views of iconic molecular processes. This is illustrated with various examples of quantum dynamics in symmetric double-well achiral molecules, such as the prototypical umbrella inversion motion of ammonia, electronic Kekul{\´e} dynamics in the benzene molecule, and coupled electron-nuclear dynamics in laser-induced indirect photodissociation of the dihydrogen molecular cation. The last part of the thesis is devoted to the development of approximate wavefunction approaches for phonon-induced vibrational relaxation of adsorbates (system) at surfaces (bath). Due to the so-called 'curse of dimensionality', these system-bath complexes cannot be handled with standard wavefunction methods. To alleviate the exponential scaling of the latter, we developed approximate yet quite accurate numerical schemes that have a polynomial scaling with respect to the bath dimensionality. The corresponding algorithms combine symmetry-based reductions of the full vibrational Hilbert space and iterative Krylov techniques. These approximate wavefunction approaches resemble the 'Bixon-Jortner model' and the more general 'quantum tier model'. This is illustrated with the decay of H-Si (D-Si) vibrations on a fully H(D)-covered silicon surface, which is modelled with a phonon-bath of more than two thousand oscillators. These approximate methods allow reliable estimation of the adsorbate vibrational lifetimes, and provide some insight into vibration-phonon couplings at solid surfaces. Although this topic is mainly computational, the developed wavefunction approaches permit to describe quantum entanglement between the system and bath states, and to embody some coherent effects in the time-evolution of the (sub-)system, which cannot be accounted for with the widely used 'reduced density matrix formalism'.}, language = {en} } @article{BounckenTiberius2023, author = {Bouncken, Ricarda B. and Tiberius, Victor}, title = {Legitimacy processes and trajectories of co-prosumption services}, series = {Journal of service research}, volume = {26}, journal = {Journal of service research}, number = {1}, publisher = {Sage Periodicals Press}, address = {London}, issn = {1094-6705}, doi = {10.1177/10946705211050208}, pages = {64 -- 82}, year = {2023}, abstract = {Our study applies legitimacy theorizing to service research, zooming in on co-prosumption service business models, which reside on significant direct contacts among provider-actors and customers as well as fellow customers in the service space. Our findings are based on a longitudinal flexible pattern matching method on 17 coworking spaces. The service cocreation nuances the double role of customers as evaluators and cocreators of legitimacy. This is because customers can have immediate perceptions of the actions and values of the services in their legitimacy evaluation while cocreating the service. Legitimacy shaped via social and recursive processes occurs in three stages: provisional, calibrated, and affirmed legitimacy. Findings inform four trajectory mechanisms of value-in-use pattern provenance, emergent Business Model development adaptive to the spatial context and loyal customers, visible trances as well as inside-out and outside-in identification processes. Further, the processes in the micro-ecosystem of an interstitial service space can develop a superordinate logic which overlays the potentially present coopetive and heterogenous institutional logics and interests of service customers.}, language = {en} }